CN104733744B - The metal polar plate of fuel cell, the metal double polar plates of fuel cell, fuel cell - Google Patents
The metal polar plate of fuel cell, the metal double polar plates of fuel cell, fuel cell Download PDFInfo
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- CN104733744B CN104733744B CN201510175275.3A CN201510175275A CN104733744B CN 104733744 B CN104733744 B CN 104733744B CN 201510175275 A CN201510175275 A CN 201510175275A CN 104733744 B CN104733744 B CN 104733744B
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- 239000002184 metal Substances 0.000 title claims abstract description 185
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 185
- 239000000446 fuel Substances 0.000 title claims abstract description 77
- 239000007789 gas Substances 0.000 claims description 82
- 239000002737 fuel gas Substances 0.000 claims description 72
- 230000001590 oxidative effect Effects 0.000 claims description 65
- 239000012528 membrane Substances 0.000 claims description 36
- 239000000110 cooling liquid Substances 0.000 claims description 28
- 239000002826 coolant Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 10
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims 2
- 238000007254 oxidation reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 12
- 230000008676 import Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a kind of metal polar plate of fuel cell, the metal double polar plates of fuel cell, fuel cell.The metal polar plate of the fuel cell has first surface and second surface, there is the parallel arrangement of first flow being stamped and formed out on first surface, there is the parallel arrangement of second flow channel being stamped and formed out on second surface, second flow channel is line flowing channel, second flow channel is arranged in a crossed manner with first flow, and the depth of second flow channel is less than the depth of first flow.Applying the technical scheme of the present invention can solve the problems, such as that the cell stack power density of fuel cell in the prior art is low and cause battery local attenuation serious due to cell stack temperature skewness.
Description
Technical field
The present invention relates to field of generating equipment, in particular to a kind of metal polar plate of fuel cell, fuel cell
Metal double polar plates, fuel cell.
Background technology
Fuel cell is a kind of TRT for the features such as having environment-friendly, efficient work, long service life concurrently.With proton
Exemplified by exchange film fuel battery (PEMFC), fuel gas (hydrogen) enters inside battery from the anode-side of battery, and hydrogen atom is in sun
Pole becomes proton after losing electronics, and the PEM of proton through inside battery reaches cell cathode, while electronics is via outer
Portion loop also reaches the negative electrode of battery, and in the cathode side of battery, proton, electronics are combined generation water with oxygen.
Chemical energy is converted into electric energy by fuel cell using on-fuel mode, due to not by thermodynamic (al) Carnot cycle work
Make the limitation of principle, its generating efficiency directly to be generated electricity using chemical energy may be up to 45%.Fuel cell is with battery pile
For the TRT of core, fuel cell system is integrated with the modules such as power management, heat management, and there is heat, electricity, water, gas to unite for it
The characteristics of raising management.Fuel cell system product is from fixed power station, to portable power supply；From electric automobile, to spaceship；
From military hardware, had a wide range of applications space to the product for civilian use.
In fuel cell structure, generally bipolar plates are built up multiple batteries heap successively with membrane electrode, so as to be formed
The higher TRT of power.
Fig. 1 is stack structure for fuel battery schematic diagram, the fuel cell pack by the first bipolar plates 1, the first membrane electrode 3 (MEA),
Second bipolar plates 2 and the second membrane electrode 4 (MEA) stack together successively, wherein, the upper table of the first bipolar plates 1 and the second bipolar plates 2
Face is anode, and the lower surfaces of the first bipolar plates 1 and the second bipolar plates 2 is negative electrode, the first membrane electrode 3 and the second membrane electrode 4 it is upper
Surface is negative electrode, and the lower surface of the first membrane electrode 3 and the second membrane electrode 4 is anode.Membrane electrode (the first membrane electrode 3 and the second film
Electrode 4) it is made up of for the generation place of electrochemical reaction, membrane electrode catalyst layer (generally Pt/C) and PEM.It is double
Runner is carved with pole plate (the first bipolar plates 1 and the second bipolar plates 2), to evenly distribute reacting gas.
In existing design, fuel cell typically uses graphite bi-polar plate (the first bipolar plates 1 and second of Carving Machining
Bipolar plates 2).Fig. 2 is the cross section structure schematic diagram figure of the graphite bi-polar plate of Carving Machining, and the first bipolar plates 1 are cloudy by positive plate 11
Pole plate 12 forms, and anode plate runner 13 is carved on positive plate 11 for the circulation of fuel hydrogen, on the side of minus plate 12
The first negative electrode plate runner 14 is carved for the circulation of oxidant gas (air or oxygen), in the opposite side engraving the of minus plate 12
Two negative electrode plate runners 15 are for the circulation of coolant (deionized water).Fig. 3 is the membrane electrode cross section structure of fuel cell, is shown in figure
Go out the anode gas diffusion layer 31 of the first membrane electrode 3, anode catalyst layer 32, PEM 33, cathode catalyst layer 34,
Cathode gas diffusion layer 35.Fig. 4 is the pile cross section structure schematic diagram of existing fuel cell.
Existing graphite bi-polar plate in order to form anode plate runner 13, the first negative electrode plate runner 14, the second negative electrode plate runner 15,
Need to ensure that bipolar plates have certain mechanical strength simultaneously, thus cause the thickness of bipolar plates thicker, stacked in multiple batteries
During into fuel cell pack, the thicker bipolar plates of multilayer are stacked so as to cause the cumulative volume of battery pile larger, reduce battery pile
Power density.Existing fuel cell also has the metal double polar plates formed by ultra-thin metallic plate punch forming, to improve battery
The power density of heap.However, because the gas flow and cooling liquid flowing channel of bipolar plates of the prior art are concavo-convex on the contrary, ensureing
On the premise of gas flowfield homogeneous (i.e. gas flow is evenly distributed after gas flow punch forming), it is difficult to it is homogeneous to form flow field
Coolant flow field, so as to cause the temperature distributing disproportionation of battery pile, cause battery local attenuation serious.
The content of the invention
It is a primary object of the present invention to provide a kind of metal polar plate of fuel cell, fuel cell metal double polar plates,
Fuel cell, with solve the cell stack power density of fuel cell in the prior art it is low and due to cell stack temperature skewness and
The problem of causing battery local attenuation serious.
To achieve these goals, according to an aspect of the invention, there is provided a kind of metal polar plate of fuel cell, tool
There are first surface and second surface, there is the parallel arrangement of first flow being stamped and formed out on first surface, have on second surface
There is the parallel arrangement of second flow channel being stamped and formed out, second flow channel is line flowing channel, and second flow channel is arranged in a crossed manner with first flow,
And the depth of second flow channel is less than the depth of first flow.
Further, second flow channel is set with first flow square crossing.
According to another aspect of the present invention, there is provided a kind of metal double polar plates of fuel cell, including：Anode metal plate,
The first surface of anode metal plate has multiple fuel gas runners；Cathodic metal plate, the first surface of cathodic metal plate have
Multiple oxidizing gas runners；Cathodic metal plate is stacked with anode metal plate, and the second surface and anode metal of cathodic metal plate
The second surface of plate is relative to each other, is formed between the second surface of cathodic metal plate and the second surface of anode metal plate multiple cold
But liquid stream road；Wherein, the foregoing metal polar plate of one of anode metal plate and cathodic metal plate, cooling liquid flowing channel is by metal
The second flow channel of pole plate is formed.
Further, there are the parallel arrangement of multiple fuel gas streams being stamped and formed out on the first surface of anode metal plate
Road, the first surface of cathodic metal plate have the parallel arrangement of multiple oxidizing gas runners being stamped and formed out, multiple fuel gas
The bearing of trend of runner is consistent with the bearing of trend of multiple oxidizing gas runners.
Further, punch forming has the first lug boss of multiple lower hollows on cathodic metal plate, and two neighboring first
Oxidizing gas runner is formed between lug boss, in anode metal plate punch forming have the second lug boss of multiple lower hollows, phase
Form fuel gas runner between adjacent two the second lug bosses, the hollow bottom of the second lug boss is hollow with the first lug boss
Bottom connection, and connect cooling liquid flowing channel to form coolant flow field.
Further, each fuel gas runner corresponds with each oxidizing gas runner, and the bottom of each fuel gas runner
It is in sealing contact between portion and the bottom of corresponding oxidizing gas runner.
Further, fuel gas runner include sequentially connect fuel gas air inlet runner, fuel gas straight channel with
Fuel gas goes out flow channel, and each fuel gas air inlet runner connects with the first end of corresponding multiple fuel gas straight channels,
Second end of multiple fuel gas straight channels and corresponding fuel gas outlet flow passage；Oxidizing gas runner includes sequentially connecting
Logical oxidizing gas air inlet runner, oxidizing gas straight channel and oxidizing gas goes out flow channel, each oxidizing gas air inlet runner with
The first end connection of corresponding multiple oxidizing gas straight channels, the second end and the corresponding oxic gas of multiple oxidizing gas straight channels
Body outlet flow passage, each oxidizing gas air inlet runner and each fuel gas air inlet runner, each oxidizing gas straight channel and each combustion
Material gas straight channel and each oxidizing gas, which go out flow channel and go out flow channel homogeneous one with each fuel gas, to be arranged in correspondence with.
Further, punch forming has the first seal convexity, the height of the first seal convexity and second in anode metal plate
The height of lug boss is equal, and fuel gas runner is arranged in the region that the first seal convexity is surrounded with cooling liquid flowing channel；
Punch forming has the second seal convexity on cathodic metal plate, and the height of the second seal convexity is equal with the height of the first lug boss,
Oxidizing gas runner is arranged in the region that the second seal convexity is surrounded, and the second seal convexity and the first seal convexity are accordingly
It is reversely raised.
Further, the first positioning hole and the second positioning hole are offered in anode metal plate, is offered on cathodic metal plate
The 3rd positioning hole corresponding with the first positioning hole and the 4th positioning hole corresponding with the second positioning hole.
According to another aspect of the invention, there is provided a kind of fuel cell, there is stacked multiple batteries heap, each battery pile
Include metal double polar plates, metal double polar plates are foregoing metal double polar plates.
Further, metal double polar plates are foregoing specific metal double polar plates, and fuel cell also includes multiple membrane electrodes,
Metal double polar plates are folded between two neighboring membrane electrode, the first seal convexity and the second lug boss with two neighboring membrane electrode
One of membrane electrode it is in sealing contact, the second seal convexity and the first lug boss are in sealing contact with another membrane electrode.
Further, between the first seal convexity and corresponding membrane electrode, the second seal convexity and corresponding membrane electrode it
Between be respectively provided with gasket seal.
Apply the technical scheme of the present invention, due to second flow channel with first flow is arranged in a crossed manner (is cooled down in fuel cell
Liquid stream road is the second flow channel), via second flow channel circulation coolant can it is more rapid, equably by fuel cell interior energy
Caused heat in conversion process is measured, so as to extend the service life of fuel cell.Further, due to being made using metal polar plate
For the inner components of fuel cell so that the volume of the battery pile of fuel cell greatly reduces, so as to preferably improve combustion
Expect the power density of battery.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation of the battery pile of the fuel cell of prior art；
Fig. 2 shows the cross section structure diagram of the graphite bi-polar plate of the fuel cell pack of prior art；
Fig. 3 shows the cross section structure schematic diagram of the membrane electrode of the fuel cell pack of prior art；
Fig. 4 shows the cross section structure schematic diagram of the battery pile of the fuel cell of prior art；
Fig. 5 shows the structural representation of the embodiment of the metal polar plate of the fuel cell of the present invention；
Fig. 6 shows the structural representation of the embodiment of the cathodic metal plate of the fuel cell of the present invention；
Fig. 7 shows the cross section structure signal that anode metal plate, membrane electrode and the cathodic metal plate of the present invention are sequentially stacked
Figure；
Fig. 8 shows that the anode metal plate of the present invention is arranged between two neighboring membrane electrode after being combined with cathodic metal plate
Cross section structure schematic diagram；
Fig. 9 shows the distribution schematic diagram in the coolant flow field on the second surface of Fig. 5 metal polar plate；
Figure 10 shows the distribution schematic diagram in the coolant flow field on the second surface of Fig. 6 cathodic metal plate；
Figure 11 show Fig. 5 metal polar plate and Fig. 6 cathodic metal plate it is stacked after the distribution in coolant flow field that is formed
Schematic diagram.
Wherein, above-mentioned accompanying drawing marks including the following drawings：
100th, anode metal plate；101st, fuel gas runner；
200th, cathodic metal plate；201st, oxidizing gas runner；
102nd, cooling liquid flowing channel；202nd, the first lug boss；
106th, the second lug boss；001st, fuel gas air inlet runner；
002nd, fuel gas straight channel；003rd, fuel gas goes out flow channel；
001 ', oxidizing gas air inlet runner；002 ', oxidizing gas straight channel；
003 ', oxidizing gas goes out flow channel；103rd, the first seal convexity；
203rd, the second seal convexity；104th, the first positioning hole；
105th, the second positioning hole；204th, the 3rd positioning hole；
205th, the 4th positioning hole；300th, membrane electrode；
400th, gasket seal；102-1, anode metal plate coolant flow field；
102-11, the second lug boss flow field；102-23, cathodic metal plate flow field inlet and outlet；
102-13, anode metal plate flow field inlet and outlet；102-2, cathodic metal plate coolant flow field；
102-21, the first lug boss flow field.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 5, present embodiments providing a kind of metal polar plate, the metal polar plate has first surface and the second table
Face, there is the parallel arrangement of first flow being stamped and formed out on first surface, there is be stamped and formed out parallel to set on second surface
The second flow channel put, second flow channel are line flowing channel, and second flow channel is arranged in a crossed manner with first flow, and the depth of second flow channel is small
In the depth of first flow.Preferably, the depth of second flow channel is the 30%-70% of the depth of first flow.Stamping machine is punched in
Punching operation, first time punching operation are first-class to be formed on the first surface twice for the second surface progress of the metal polar plate
Road, second of punching operation is then carried out to form second flow channel.In the inventive solutions, metal polar plate is not limited to answer
Metal polar plate is processed with a kind of mode of punch machining process, the equivalent processing mode of other action effects should also be included into this
The protection domain of the technical scheme of invention.
The fuel gas that fuel cell in the present embodiment is applied is preferably hydrogen, and oxidizing gas is preferably air.
Because cooling liquid flowing channel is the second flow channel in second flow channel and first flow i.e. fuel cell arranged in a crossed manner, via second flow channel
The coolant of circulation can it is more rapid, equably by caused heat in fuel cell self-energy conversion process, so as to extend
The service life of fuel cell.Further, due to using inner components of the metal polar plate as fuel cell so that fuel
The volume of the battery pile of battery greatly reduces, so as to preferably improve the power density of fuel cell.
In the present embodiment, second flow channel is set with first flow square crossing.Coolant can be so reduced to cool down
Length of flow in liquid stream road, so as to reduce liquid pressure drop, then reduce pump consumption.
With reference to shown in referring to Fig. 5 and Fig. 6, a kind of metal double polar plates of fuel cell are present embodiments provided.Fuel electricity
The metal double polar plates in pond include anode metal plate 100 and cathodic metal plate 200.The of the anode metal plate 100 of anode metal plate 100
One surface has multiple fuel gas runners 101, and the first surface of the cathodic metal plate 200 of cathodic metal plate 200 has multiple oxygen
Change gas flow 201, cathodic metal plate 200 is stacked with anode metal plate 100, and the second surface of cathodic metal plate 200 and sun
The second surface of pole metallic plate 100 is relative to each other, the second surface of cathodic metal plate 200 and the second table of anode metal plate 100
Multiple cooling liquid flowing channels 102 are formed between face.Wherein, one of anode metal plate 100 and cathodic metal plate 200 are foregoing
Metal polar plate, cooling liquid flowing channel 102 formed by the second flow channel of metal polar plate.When anode metal plate 100 and cathodic metal plate
200 can also select foregoing metal polar plate simultaneously, so, be formed after anode metal plate 100 and cathodic metal plate 200 are stacked
The flow channel space of cooling liquid flowing channel 102 is bigger, so as to allow the coolant by greater flow, therefore can be more quickly by combustion
Caused heat is taken away in material battery.
In the present embodiment, there are the parallel arrangement of multiple combustions being stamped and formed out on the first surface of anode metal plate 100
Expect gas flow 101, the first surface of cathodic metal plate 200 has the parallel arrangement of multiple oxidizing gas runners being stamped and formed out
201, the bearing of trend of multiple fuel gas runners 101 is consistent with the bearing of trend of multiple oxidizing gas runners 201.So design
Benefit be to facilitate the processing of anode metal plate 100 and cathodic metal plate 200, the fuel gas runner in anode metal plate 100
101 and cathodic metal plate 200 on oxidizing gas runner 201 pass through the stamping tool of first time punching operation and punching press and join
The parameters such as punching press torque, punching press time interval needed for number punching press can be completed to process.
With reference to shown in referring to Fig. 5 to Figure 11, on cathodic metal plate 200 punch forming have the first raised of multiple lower hollows
Portion 202, oxidizing gas runner 201 is formed between two neighboring first lug boss 202, in anode metal plate 100 punch forming have
Second lug boss 106 of multiple lower hollows, forms fuel gas runner 101 between two neighboring second lug boss 106, and second
The hollow bottom of lug boss 106 connects with the hollow bottom of the first lug boss 202, and connects cooling liquid flowing channel 102 with shape
Into coolant flow field.After anode metal plate 100 and cathodic metal plate 200 stack together, anode metal plate 100 and negative electrode gold
It is stamped on category plate 200 between the hollow bottom of the first lug boss 202 to be formed, the second lug boss 106 and is stamped what is formed
Cooling liquid flowing channel 102 penetrates, so as to form netted cooling liquid stream between anode metal plate 100 and cathodic metal plate 200
.Coolant flow field has a greater degree of heat-exchange capacity to fuel cell, thus coolant flow field being capable of more uniformly band
Walk the heat of fuel battery inside.
As shown in figure 9, Fig. 9 is the distribution schematic diagram in the coolant flow field on the second surface of metal polar plate, i.e., anode is golden
Belong to plate coolant flow field 102-1 distribution schematic diagram.Anode metal plate coolant flow field 102-1's in anode metal plate 100
Second lug boss flow field 102-11 is formed by the hollow bottom of the second lug boss 106, due to cooling liquid flowing channel 102 and fuel gas
Body runner 101 is arranged in a crossed manner, therefore the liquid stream road 102 that is cooled between each second lug boss flow field 102-11 penetrates, so as to be formed
Netted anode metal plate coolant flow field 102-1.Preferably, anode metal plate coolant flow field 102-1 has multiple anodes
102-13 is imported and exported in metallic plate flow field, and multiple anode metal plate flow field inlet and outlet 102-13 are formed by punch process.Such as
Shown in Figure 10, similarly, after oxidizing gas runner 201 is stamped and formed out on cathodic metal plate 200, the first lug boss that punching press obtains
And anode metal plate 202, cathodic metal plate coolant flow field 102-2 is formed on the hollow bottom of first lug boss 202, i.e.,
The second lug boss flow field 102-11 on 100 it is corresponding and connection the first lug boss flow field 102-21.In addition, and anode metal
Plate coolant flow field 102-1 anode metal plate flow field inlet and outlet 102-13 is identical, cathodic metal plate flow field inlet and outlet 102-23
Also have multiple, and be processed by way of punch process.
As shown in figure 11, after anode metal plate 100 is stacked with cathodic metal plate 200, anode metal plate cooling liquid flowing channel
102-1 and cathodic metal plate cooling liquid flowing channel 102-2 forms netted coolant flow cavity as shown in figure 11 and (cools down liquid stream
).ECL one direction circulates in coolant flow field, and as shown in figure 11, hollow arrow represents the flowing side of coolant in figure
To, and show cooling liquid inlet direction and cooling liquid outlet direction.
As shown in figure 8, each fuel gas runner 101 corresponds with each oxidizing gas runner 201, and each fuel gas stream
It is in sealing contact between the bottom in road 101 and the bottom of corresponding oxidizing gas runner 201.Metal can be so improved as much as possible
The mechanical strength of bipolar plates so that fuel cell has enough intensity in the handling process, so as to be hardly damaged.
With reference to shown in referring to Fig. 5 and Fig. 6, fuel gas runner 101 includes the fuel gas air inlet runner sequentially connected
001st, fuel gas straight channel 002 and fuel gas go out flow channel 003, each fuel gas air inlet runner 001 with it is corresponding more
The first end connection of individual fuel gas straight channel 002, the second end and the corresponding fuel gas of multiple fuel gas straight channels 002
Go out flow channel 003 to connect；Oxidizing gas air inlet runner 001 ', the oxidizing gas that oxidizing gas runner 201 includes sequentially connecting are straight
Runner 002 ' goes out flow channel 003 ' with oxidizing gas, and each oxidizing gas air inlet runner 001 ' and corresponding multiple oxidizing gases are straight
The first end connection of runner 002 ', the second end of multiple oxidizing gas straight channels 002 ' goes out flow channel with corresponding oxidizing gas
003 ' connection, each oxidizing gas air inlet runner 001 ' and each fuel gas air inlet runner 001, each oxidizing gas straight channel 002 ' with
Each fuel gas straight channel 002 and each oxidizing gas go out flow channel 003 ' and go out flow channel 003 homogeneous a pair with each fuel gas
Should ground setting.In the present embodiment, each 001, three fuel gas straight channel 002 of fuel gas air inlet runner is corresponding with one
Fuel gas go out flow channel 003 and sequentially connect.So can be that fuel gas in incoming fuel battery can be more uniformly
Diffusion, conversion of the chemical energy to electric energy is carried out so as to higher efficiency, the speed of chemical reaction is improved, strengthens the work(of fuel cell
Can ability.
With reference to shown in referring to Fig. 5 to Fig. 8, in anode metal plate 100 punch forming have the first seal convexity 103, first is close
The height of envelope projection 103 is equal with the height of the second lug boss 106, and fuel gas runner 101 is respectively provided with cooling liquid flowing channel 102
In the region that the first seal convexity 103 is surrounded；Punch forming has the second seal convexity 203 on cathodic metal plate 200, and second
The height of seal convexity 203 is equal with the height of the first lug boss 202, and oxidizing gas runner 201 is arranged on the second seal convexity
In 203 regions surrounded, the second seal convexity 203 and the first seal convexity 103 are accordingly reversely raised.So can be preferable
The inside to fuel cell seal, fuel gas in fuel cell and oxidizing gas leakage are avoided, so as to influence to fire
Expect the normal work of battery, or even cause fuel cell to be scrapped.
After anode metal plate 100 and cathodic metal plate 200 stack together, the fuel gas in anode metal plate 100
Body import A1 overlaps the complete fuel gas to be formed on metal double polar plates with the fuel gas inlets C1 on cathodic metal plate 200
Import, similarly, the fuel gas outlet A2 and fuel gas outlet A4 on cathodic metal plate 200 in anode metal plate 100
Overlap the complete fuel gas outlet formed on metal double polar plates.Oxidizing gas import A3 and the moon in anode metal plate 100
Oxidizing gas import C3 on pole metallic plate 200 overlaps the complete oxidizing gas import to form metal double polar plates, similarly, sun
Oxidizing gas outlet A4 on pole metallic plate 100 overlaps to form metal pair with the oxidizing gas outlet C4 on cathodic metal plate 200
The complete oxidizing gas outlet of pole plate.Fuel gas inlets on metal double polar plates are located at metal bipolar with oxidizing gas import
On the first side of plate, fuel gas outlet is with oxidizing gas outlet on the second side relative with the first side；By anode
Cooling liquid inlet A5 on metallic plate 100 overlaps the metal double polar plates to be formed with the cooling liquid inlet C5 on cathodic metal plate 200
Complete cooling liquid inlet, gone out with the coolant on cathodic metal plate 200 by the cooling liquid outlet A6 in anode metal plate 100
Mouthful C6 overlap the metal double polar plates to be formed complete cooling liquid outlet be located at respectively it is other relative with metal double polar plates
On two sides.
In the present embodiment, the first positioning hole 104 and the second positioning hole 105, negative electrode gold are offered in anode metal plate 100
Offered on category plate 200 with 104 corresponding 3rd positioning hole 204 of the first positioning hole and with the second positioning hole 105 the corresponding 4th
Positioning hole 205.By between the first positioning hole 104 and the 3rd positioning hole 204, the second positioning hole 105 and the 4th positioning hole 205 it
Between be aligned positioning, can rapidly by anode metal plate 100 and cathodic metal plate 200 exactly be stacked installation.Further, work
Anode metal plate 100 is fixedly connected by personnel by the fastening connection piece being located in positioning hole with cathodic metal plate 200.
A kind of other side according to embodiments of the present invention, there is provided fuel cell.The fuel cell has stacked
Multiple batteries heap, each battery pile include metal double polar plates, and metal double polar plates are foregoing metal double polar plates.
As shown in Figure 7 and Figure 8, fuel cell also includes multiple membrane electrodes 300, and metal double polar plates are folded in two neighboring film
Between electrode 300, the one of film electricity of the first seal convexity 103 and the second lug boss 106 with two neighboring membrane electrode 300
Pole 300 is in sealing contact, and the second seal convexity 203 and the first lug boss 202 are in sealing contact with another membrane electrode 300.
In this embodiment, in order to preferably to being sealed between metal double polar plates and membrane electrode 300, thus the first sealing
Sealing gasket is respectively provided between projection 103 and corresponding membrane electrode 300, between the second seal convexity 203 and corresponding membrane electrode 300
Piece 400.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (12)
1. a kind of metal polar plate of fuel cell, there is first surface and second surface, there is punching press shape on the first surface
Into parallel arrangement of first flow, there is on the second surface the parallel arrangement of second flow channel being stamped and formed out, its feature
It is, the second flow channel is line flowing channel, and the second flow channel and the first flow are arranged in a crossed manner, and the second flow channel
Depth be less than the depth of the first flow, the second flow channel forms the cooling liquid flowing channel of fuel cell.
2. metal polar plate according to claim 1, it is characterised in that the second flow channel is vertical with the first flow to be handed over
Fork is set.
A kind of 3. metal double polar plates of fuel cell, it is characterised in that including：
Anode metal plate (100), the first surface of the anode metal plate (100) have multiple fuel gas runners (101)；
Cathodic metal plate (200), the first surface of the cathodic metal plate (200) have multiple oxidizing gas runners (201)；
The cathodic metal plate (200) is stacked with the anode metal plate (100), and the second of the cathodic metal plate (200)
The second surface on surface and the anode metal plate (100) is relative to each other, the second surface of the cathodic metal plate (200) and institute
State and form multiple cooling liquid flowing channels (102) between the second surface of anode metal plate (100)；
Wherein, one of the anode metal plate (100) and cathodic metal plate (200) are the gold described in claim 1 or 2
Belong to pole plate, the cooling liquid flowing channel (102) is formed by the second flow channel of the metal polar plate.
4. metal double polar plates according to claim 3, it is characterised in that the first surface of the anode metal plate (100)
It is upper that there is the parallel arrangement of multiple fuel gas runners (101) being stamped and formed out, the first surface of the cathodic metal plate (200)
With the parallel arrangement of multiple oxidizing gas runners (201) being stamped and formed out, the extension of the multiple fuel gas runner (101)
Direction is consistent with the bearing of trend of the multiple oxidizing gas runner (201).
5. the metal double polar plates according to claim 3 or 4, it is characterised in that struck out on the cathodic metal plate (200)
Type has the first lug boss (202) of multiple lower hollows, and the oxidation is formed between two neighboring first lug boss (202)
Gas flow (201), on the anode metal plate (100) punch forming have the second lug boss (106) of multiple lower hollows, phase
The fuel gas runner (201) is formed between adjacent two second lug bosses (106), second lug boss (106)
Hollow bottom connects with the hollow bottom of first lug boss (202), and connects the cooling liquid flowing channel (102) with shape
Into coolant flow field.
6. metal double polar plates according to claim 5, it is characterised in that each fuel gas runner (101) and each institute
State oxidizing gas runner (201) one-to-one corresponding, and the bottom of each fuel gas runner (101) and the corresponding oxic gas
It is in sealing contact between the bottom of body runner (201).
7. metal double polar plates according to claim 3, it is characterised in that
The fuel gas runner (101) includes fuel gas air inlet runner (001), the fuel gas straight channel sequentially connected
(002) flow channel (003) is gone out with fuel gas, each fuel gas air inlet runner (001) and corresponding multiple fuel gas
The first end connection of body straight channel (002), the second end and the corresponding fuel of the multiple fuel gas straight channel (002)
Gas goes out flow channel (003) connection；
The oxidizing gas runner (201) includes oxidizing gas air inlet runner (001 '), the oxidizing gas straight channel sequentially connected
(002 ') goes out flow channel (003 ') with oxidizing gas, each oxidizing gas air inlet runner (001 ') and corresponding multiple oxidations
Gas straight channel (002 ') first end connection, the second end of the multiple oxidizing gas straight channel (002 ') with it is corresponding described in
Oxidizing gas goes out flow channel (003 ') connection, each oxidizing gas air inlet runner (001 ') and each fuel gas inlet air flow
Road (001), each oxidizing gas straight channel (002 ') and each fuel gas straight channel (002) and each oxic gas
Body goes out flow channel (003 ') and goes out flow channel (003) with each fuel gas to be set correspondingly.
8. metal double polar plates according to claim 5, it is characterised in that
Punch forming has the first seal convexity (103) on the anode metal plate (100), first seal convexity (103)
Height is equal with the height of second lug boss (106), the fuel gas runner (101) and the cooling liquid flowing channel
(102) it is arranged in the region that first seal convexity (103) is surrounded；
Punch forming has the second seal convexity (203) on the cathodic metal plate (200), second seal convexity (203)
Height is equal with the height of first lug boss (202), and it is convex that the oxidizing gas runner (201) is arranged on second sealing
Rise in the region that (203) are surrounded, second seal convexity (203) and first seal convexity (103) are accordingly reverse
It is raised.
9. metal double polar plates according to claim 3, it is characterised in that is offered on the anode metal plate (100)
A positioning hole (104) and the second positioning hole (105), offer and first positioning hole on the cathodic metal plate (200)
(104) the 3rd positioning hole (204) corresponding to and the 4th positioning hole (205) corresponding with second positioning hole (105).
10. a kind of fuel cell, has stacked multiple batteries heap, each battery pile includes metal double polar plates, its feature
It is, the metal double polar plates are the metal double polar plates any one of claim 3 to 9.
11. fuel cell according to claim 10, it is characterised in that the metal double polar plates are described in claim 8
Metal double polar plates, the fuel cell also includes multiple membrane electrodes (300), and the metal double polar plates are folded in two neighboring institute
Between stating membrane electrode (300), first seal convexity (103) and second lug boss (106) with it is described two neighboring
One of them described membrane electrode (300) of membrane electrode (300) is in sealing contact, second seal convexity (203) and described first
Lug boss (202) is in sealing contact with membrane electrode another described (300).
12. fuel cell according to claim 11, it is characterised in that first seal convexity (103) with it is corresponding
It is respectively provided between the membrane electrode (300), between second seal convexity (203) and the corresponding membrane electrode (300) close
Gasket (400).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510175275.3A CN104733744B (en) | 2015-04-14 | 2015-04-14 | The metal polar plate of fuel cell, the metal double polar plates of fuel cell, fuel cell |
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| CN201510175275.3A CN104733744B (en) | 2015-04-14 | 2015-04-14 | The metal polar plate of fuel cell, the metal double polar plates of fuel cell, fuel cell |
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| CN104733744B true CN104733744B (en) | 2017-12-19 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI613863B (en) * | 2016-11-30 | 2018-02-01 | 黃鎮江 | Bipolar plate structure with optimized gas flow path |
| TWI613862B (en) * | 2016-11-30 | 2018-02-01 | 黃鎮江 | Fuel cell bipolar plate intake structure with drainage groove |
| CN109428090A (en) * | 2017-09-01 | 2019-03-05 | 上海铭寰新能源科技有限公司 | A kind of fuel cell with merging runner |
| CN109119654A (en) * | 2018-09-28 | 2019-01-01 | 武汉喜玛拉雅光电科技股份有限公司 | A kind of bipolar plates and fuel cell |
| CN109360998B (en) * | 2018-10-22 | 2024-11-12 | 山东岱擎新能源科技有限公司 | Ultra-thin metal composite bipolar plate and preparation method thereof and fuel cell containing the same |
| CN109830705B (en) * | 2019-03-01 | 2021-02-05 | 山东大学 | A fuel cell electrode structure and stack |
| CN110323466B (en) * | 2019-07-09 | 2024-09-10 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Novel fuel cell graphite bipolar plate structure |
| CN112531181B (en) * | 2019-09-18 | 2022-06-03 | 中国科学院苏州纳米技术与纳米仿生研究所 | Polymer material-based bipolar plate, single cell comprising same and galvanic pile |
| US12051831B2 (en) | 2020-02-12 | 2024-07-30 | ZeroAvia, Inc. | Bipolar plate of fuel cell with composite corrosion-resistant gastight conductive coating and method of forming thereof |
| CN115117383B (en) * | 2022-07-07 | 2024-12-10 | 中车工业研究院有限公司 | Fuel cell electrode plate and fuel cell |
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| CN104733744A (en) | 2015-06-24 |
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Effective date of registration: 20200820 Address after: 610097 No. 18 Xixin Avenue, Chengdu High-tech Zone, Sichuan Province Patentee after: Dongfang Electric (Chengdu) Hydrogen Fuel Cell Technology Co.,Ltd. Address before: 611731 Dongfang Electric Central Research Institute, No. 18 West core road, hi tech West District, Sichuan, Chengdu Patentee before: DONGFANG ELECTRIC Corp. |
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